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llama : add note about context size queries

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This commit is contained in:
Georgi Gerganov
2025-10-30 20:16:20 +02:00
parent 2d69109dc1
commit 9d342994f5
2 changed files with 14 additions and 2 deletions
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4
include/llama.h
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@@ -461,6 +461,8 @@ extern "C" {
LLAMA_API bool llama_supports_gpu_offload(void);
LLAMA_API bool llama_supports_rpc (void);
// NOTE: After creating a llama_context, it is recommended to query the actual values using these functions
// In some cases the requested values via llama_context_params may differ from the actual values used by the context
LLAMA_API uint32_t llama_n_ctx (const struct llama_context * ctx);
LLAMA_API uint32_t llama_n_ctx_seq (const struct llama_context * ctx);
LLAMA_API uint32_t llama_n_batch (const struct llama_context * ctx);
@@ -586,7 +588,7 @@ extern "C" {
LLAMA_API int32_t llama_adapter_meta_val_str_by_index(const struct llama_adapter_lora * adapter, int32_t i, char * buf, size_t buf_size);
// Manually free a LoRA adapter
// Note: loaded adapters will be free when the associated model is deleted
// NOTE: loaded adapters will be free when the associated model is deleted
LLAMA_API void llama_adapter_lora_free(struct llama_adapter_lora * adapter);
// Get the invocation tokens if the current lora is an alora

12
src/llama-context.cpp
View File

@@ -112,7 +112,11 @@ llama_context::llama_context(
}
}
cparams.n_ctx_seq = cparams.kv_unified ? cparams.n_ctx : cparams.n_ctx / cparams.n_seq_max;
if (cparams.kv_unified) {
cparams.n_ctx_seq = cparams.n_ctx;
} else {
cparams.n_ctx_seq = cparams.n_ctx / cparams.n_seq_max;
}
if (cparams.n_ctx_seq > hparams.n_ctx_train) {
LLAMA_LOG_WARN("%s: capping n_ctx_seq (%u) to n_ctx_train (%u)\n", __func__, cparams.n_ctx_seq, hparams.n_ctx_train);
@@ -120,6 +124,12 @@ llama_context::llama_context(
cparams.n_ctx_seq = hparams.n_ctx_train;
}
if (cparams.kv_unified) {
cparams.n_ctx = cparams.n_ctx_seq;
} else {
cparams.n_ctx = cparams.n_ctx_seq * cparams.n_seq_max;
}
LLAMA_LOG_INFO("%s: n_seq_max = %u\n", __func__, cparams.n_seq_max);
LLAMA_LOG_INFO("%s: n_ctx = %u\n", __func__, cparams.n_ctx);
LLAMA_LOG_INFO("%s: n_ctx_seq = %u\n", __func__, cparams.n_ctx_seq);